Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Wave

What is the wavelength range of Infra-red waves?

1

1 nm to 10^-3 mm

2

400 nm to 1 mm

3

700 nm and 1 mm

4

More than one of the above

5

None of the above

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